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Finding the Fourth Proportional to 127,347.80, 191,021.70 and 97,823.30

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Solution

The fourth proportional to 127,347.80, 191,021.70 and 97,823.30 is: 146,734.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,347.80 : 191,021.70 = 97,823.30 : x
  2. Step 2: Convert to fraction form
    127,347.80/191,021.70 = 97,823.30/x
  3. Step 3: Cross multiply
    127,347.80x = 191,021.70 × 97,823.30
  4. Step 4: Simplify right side
    127,347.80x = 18,686,373,065.61
  5. Step 5: Solve for x
    x = 18,686,373,065.61/127,347.80
  6. Step 6: Final answer
    x = 146,734.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.